CVE-2025-13281 | Portworx Half-Blind SSRF in kube-controller-manager

A half-blind Server Side Request Forgery (SSRF) vulnerability exists in kube-controller-manager when using the in-tree Portworx StorageClass. This vulnerability allows authorized users to leak arbitrary information from unprotected endpoints in the control plane’s host network (including link-local or loopback services).

Published: 2025-12-14 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-13281 is rated Low Risk (33/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.36%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-13281

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.03% 0.36% +0.33%
2 2025-12-15 — 0.03% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-13281

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.3 4.0 [email protected]

Weakness enumeration for CVE-2025-13281

GitHub Security Advisory for CVE-2025-13281

GHSA-r6j8-c6r2-37rr · Severity: medium · Ecosystem: go — kube-controller-manager is vulnerable to half-blind Server Side Request Forgery through in-tree Portworx StorageClass

OS Trackers for CVE-2025-13281

vendor priority summary link
alpine medium CVE-2025-13281: 1 source package rows (kubernetes); 39 state rows across 3 repos (3.22-community, 3.23-community, edge-community); fixed 0, open 39. https://security.alpinelinux.org/vuln/CVE-2025-13281
debian not yet assigned CVE-2025-13281 not yet assigned priority: Debian including 1 source packages (kubernetes), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2025-13281
redhat medium — https://access.redhat.com/security/cve/CVE-2025-13281
ubuntu medium CVE-2025-13281 medium priority: Ubuntu including 1 source packages (kubernetes), 6 status rows across 6 suites (focal, jammy, noble, plucky, questing, upstream): not-affected 3, DNE 2, needs-triage 1. https://ubuntu.com/security/CVE-2025-13281

Affected software / configurations for CVE-2025-13281

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-13281

cvelogic Threat Intelligence